package typeinfo;
import java.util.*;
class CountedInteger{
    private static long counter;
    private final long id=counter++;

    @Override
    public String toString() {
        return Long.toString(id);
    }
}
public class FilledList<T> {
    private Class<T> type;

    public FilledList(Class<T> type) {
        this.type = type;
    }
    public List<T> create(int nElements){
        List<T> result=new ArrayList<>();
        try {
            for(int i=0;i<nElements;i++)
               result.add(type.newInstance());
        }catch (Exception e){
            throw new RuntimeException(e);
        }
        return result;
    }

    public static void main(String[] args) {
        FilledList<CountedInteger> fl=new FilledList<>(CountedInteger.class);
        System.out.println(fl.create(15));
    }
}
